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192.168.1.100 / T108 / e958203796650e3959a43708d67534bf36f4c83b / . / marvell / linux / arch / powerpc / include / asm / compat.h
blob: 3e3cdfaa76c6a5cac084d7ce8451f9dcc6fd5535 [file] [log] [blame]
b.liue9582032025-04-17 19:18:16 +0800[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_COMPAT_H
3#define _ASM_POWERPC_COMPAT_H
4#ifdef __KERNEL__
5/*
6 * Architecture specific compatibility types
7 */
8#include <linux/types.h>
9#include <linux/sched.h>
10
11#include <asm-generic/compat.h>
12
13#define COMPAT_USER_HZ 100
14#ifdef __BIG_ENDIAN__
15#define COMPAT_UTS_MACHINE "ppc\0\0"
16#else
17#define COMPAT_UTS_MACHINE "ppcle\0\0"
18#endif
19
20typedef u32 __compat_uid_t;
21typedef u32 __compat_gid_t;
22typedef u32 __compat_uid32_t;
23typedef u32 __compat_gid32_t;
24typedef u32 compat_mode_t;
25typedef u32 compat_dev_t;
26typedef s16 compat_nlink_t;
27typedef u16 compat_ipc_pid_t;
28typedef u32 compat_caddr_t;
29typedef __kernel_fsid_t compat_fsid_t;
30typedef s64 compat_s64;
31typedef u64 compat_u64;
32
33struct compat_stat {
34 compat_dev_t st_dev;
35 compat_ino_t st_ino;
36 compat_mode_t st_mode;
37 compat_nlink_t st_nlink;
38 __compat_uid32_t st_uid;
39 __compat_gid32_t st_gid;
40 compat_dev_t st_rdev;
41 compat_off_t st_size;
42 compat_off_t st_blksize;
43 compat_off_t st_blocks;
44 old_time32_t st_atime;
45 u32 st_atime_nsec;
46 old_time32_t st_mtime;
47 u32 st_mtime_nsec;
48 old_time32_t st_ctime;
49 u32 st_ctime_nsec;
50 u32 __unused4[2];
51};
52
53struct compat_flock {
54 short l_type;
55 short l_whence;
56 compat_off_t l_start;
57 compat_off_t l_len;
58 compat_pid_t l_pid;
59};
60
61#define F_GETLK64 12 /* using 'struct flock64' */
62#define F_SETLK64 13
63#define F_SETLKW64 14
64
65struct compat_flock64 {
66 short l_type;
67 short l_whence;
68 compat_loff_t l_start;
69 compat_loff_t l_len;
70 compat_pid_t l_pid;
71};
72
73struct compat_statfs {
74 int f_type;
75 int f_bsize;
76 int f_blocks;
77 int f_bfree;
78 int f_bavail;
79 int f_files;
80 int f_ffree;
81 compat_fsid_t f_fsid;
82 int f_namelen; /* SunOS ignores this field. */
83 int f_frsize;
84 int f_flags;
85 int f_spare[4];
86};
87
88#define COMPAT_RLIM_INFINITY 0xffffffff
89
90typedef u32 compat_old_sigset_t;
91
92#define _COMPAT_NSIG 64
93#define _COMPAT_NSIG_BPW 32
94
95typedef u32 compat_sigset_word;
96
97#define COMPAT_OFF_T_MAX 0x7fffffff
98
99static inline void __user *arch_compat_alloc_user_space(long len)
100{
101 struct pt_regs *regs = current->thread.regs;
102 unsigned long usp = regs->gpr[1];
103
104 /*
105 * We can't access below the stack pointer in the 32bit ABI and
106 * can access 288 bytes in the 64bit big-endian ABI,
107 * or 512 bytes with the new ELFv2 little-endian ABI.
108 */
109 if (!is_32bit_task())
110 usp -= USER_REDZONE_SIZE;
111
112 return (void __user *) (usp - len);
113}
114
115/*
116 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to
117 * it we may as well define it.
118 */
119struct compat_ipc64_perm {
120 compat_key_t key;
121 __compat_uid_t uid;
122 __compat_gid_t gid;
123 __compat_uid_t cuid;
124 __compat_gid_t cgid;
125 compat_mode_t mode;
126 unsigned int seq;
127 unsigned int __pad2;
128 unsigned long __unused1; /* yes they really are 64bit pads */
129 unsigned long __unused2;
130};
131
132struct compat_semid64_ds {
133 struct compat_ipc64_perm sem_perm;
134 unsigned int sem_otime_high;
135 unsigned int sem_otime;
136 unsigned int sem_ctime_high;
137 unsigned int sem_ctime;
138 compat_ulong_t sem_nsems;
139 compat_ulong_t __unused3;
140 compat_ulong_t __unused4;
141};
142
143struct compat_msqid64_ds {
144 struct compat_ipc64_perm msg_perm;
145 unsigned int msg_stime_high;
146 unsigned int msg_stime;
147 unsigned int msg_rtime_high;
148 unsigned int msg_rtime;
149 unsigned int msg_ctime_high;
150 unsigned int msg_ctime;
151 compat_ulong_t msg_cbytes;
152 compat_ulong_t msg_qnum;
153 compat_ulong_t msg_qbytes;
154 compat_pid_t msg_lspid;
155 compat_pid_t msg_lrpid;
156 compat_ulong_t __unused4;
157 compat_ulong_t __unused5;
158};
159
160struct compat_shmid64_ds {
161 struct compat_ipc64_perm shm_perm;
162 unsigned int shm_atime_high;
163 unsigned int shm_atime;
164 unsigned int shm_dtime_high;
165 unsigned int shm_dtime;
166 unsigned int shm_ctime_high;
167 unsigned int shm_ctime;
168 unsigned int __unused4;
169 compat_size_t shm_segsz;
170 compat_pid_t shm_cpid;
171 compat_pid_t shm_lpid;
172 compat_ulong_t shm_nattch;
173 compat_ulong_t __unused5;
174 compat_ulong_t __unused6;
175};
176
177static inline int is_compat_task(void)
178{
179 return is_32bit_task();
180}
181
182#endif /* __KERNEL__ */
183#endif /* _ASM_POWERPC_COMPAT_H */